Heinrich Ivanovich Gross, also known as Heinrich Gottfried Gross, served as the Russian ambassador to Great Britain from 1764 to 1765.

His career in the State Collegium of Foreign Affairs began in October 1736, thanks to the recommendation of the Russian envoy in England, A. D. Kantemir. Under his guidance, Gross initially worked in London, and from 1738, in Paris.

In 1741, he became the secretary of the mission in Paris. From 1744, he served as acting chargé d'affaires, and in 1745 and 1748, he was appointed as an extraordinary minister. In 1749 and 1750, Gross served as an envoy in Prussia, and in 1761 and 1764, in Holland.

In 1763, Catherine II appointed him as an extraordinary minister in London, where he remained until his death in 1765. Gross was known as an exemplary diplomat. He was buried in the German church on the Strand, from where all remains were later transferred to New Southgate in the "Savoia Crypt (Queen Victoria's)", although his name does not appear in the records of the Savoia repositories.